The transducer converts high-frequency electrical energy into
high-frequency mechanical vibrations. And it contains several
piezoelectric ceramic discs sandwiched under pressure between two
metal blocks. Between each disc is a thin metal plate, which forms
the electrode. When a sinusoidal electrical signal is fed to the
transducer via the electrodes, the discs exp and and contract,
producing axial vibrations.

2. Once assembled, the transducers are aged before testing and
final assembly. The properties of piezoelectric materials can
change with time and pressure, so a bit of time on the shelf prior
to testing will identify nonconforming material.

3. One by one testing to ensure that each transducer performance
are excellent.

4. In good heat resistance, can be used in a wide range of
temperature with long life and high reliability.